Radio apparatus



Aug. 28, 1934. A. T. cARNEY RADIO APPARATUS Filed April 20, 1932 TO TRANSFOGHER 7.' CAE/VE Y lao Patented Aug. 28, 1934 UNITED; STATES Yimmo APPARATUS' Arthur T. Carney,- Blairsville, Pa., assignor of one-third to R. E. Miles, Jr., Wilkinsburg, Pa.

Application April 20,- 1932, Serial No. 606,459

' 7 Claims.

' v 5 cient switch which is particularly designated for use in connection with means for automatically and visibly designating the geographic location of the broadcasting station from which a radio program is being received.

Another object of this invention is the production of a simple and ecient electric switch for Ause in conjunction with radio turning dials the various portions of the switch being so conc structed as to provide an eicient electrical contact for a turning dial. With these `and other objects in view, this invention `consists in certain novel constructions, combinations, and arrangements of parts as will be hereinafter fully described and claimed.

In the drawing:

Figure 1 is a side elevation of the distributing dial of associated parts for controlling theoperation of the electrical designating means; c

Figure 2 is a section taken on line 2-2 of Figure 1;

Figure 3. is a longitudinal section through the distributor finger, certain parts being shown in section, the conducting band being also shown in c transverse section; 1

Figure 4 is a section taken on line 4`4 of Figure 3;

Figure 5 is a fragmentary perspective view of a portion of the distributing dial showing the various contacts' carriedthereby; c v Y By referring to the drawing it will be seen that 9 designates a tuning dial which maybe operated in any suitable or desired manner as is common tothe trade, whereby rotary movement may be c imparted to the tuning dial' shaft lO'as the tuning dial 9 is rotated to Vin dicatethe wave length of the station from which reception is being obtained. This shaft 10 supports an insulated disc 11 vupon which is secured ateither side, a conducting disc plate 12 preferably formed of aluminum. Each plate 12 is provided with a projecting longitudinally slotted arm 13 upon which arm 13 is slidably and adjustably mounted the distributor finger 14. u y j The distributor nger 14 is securely fastened within the slotted arms by means of ythel securing screws 15 which pass through theslots 16 of the arms 13. The screws`r15 may be securedl to the distributor nger in any suitable or desired manner. The securing' screws 15 also pass through the arc slot 17 formed in the vside bands kcarried near the upper end of the plate'21.

18, which side bands are carried by the distributing dial 19. This distributing dial 19 is mounted upon the distributor base 20 formed of bakelite, or other non-conducting material, which base 20 is provided with an upwardly ex- 60 tending arc shaped distributing disc supporting plate 21, as shown in Figure 1, the respective ends of the distributing disc being anchored in any suitable or desired manner thereto.

The distributing disc 19 comprises a pair of 65 spaced substantially.semifcircular sections 19a and 19h, each being formed of insulating material and within which are molded suitable contact plates22, thecontact plates on the sections 19a and 19D `vbeing arranged in progressively 70 spaced relation so as to cause only one contact plate to close a circuit with the distributor finger hereinafter more fully described. Each contact plate 22 may be provided with suitable means indicated by the numeral 23, projecting from the outer face thereof for the purpose of permitting an electrical conducting wire to be connected thereto. Electric conducting wires may be connected in any rsuitable or desired manner to these conducting plates without departing from the spirit of the invention in View of the fact that this electrical connection may be made in any suitable manner as is common to the trade.

The distributor linger l4.comprises a head 24 upon which is mounted a spring-Dressed shoe 25, this shoe carrying a plurality of studs 26 which t in sockets 27 formed in the head 24, suitable coil 'springs 28 being mounted in the sockets 27 for also velectrically connected by means of a wire 30 95 toa spring-pressed pin 31 mounted within a receptacle 32 and vthis spring-pressed pin 31 normally closes a contactwith the conducting band 33, this conducting band being secured at one end as at 34, to the plate 21 and being yieldably sup- 100 'ported upon the spring35 carried by the pin 36,

the pin 36 being supported upon the bracket 37 This contact band 33 partlyl encircles the disc 11 and comprises an open ended band, the ends of which are supported, as shown in Figure 1, and as described specifically above. The band is mounted so as to pass between the arms 13 and arranged in spaced relation with respect to these arms; A

buer spring 38 is supportedupon one end of the 110 to indicate the position of said distributor nger upon said dial, and spring buier means interposed between said distributor finger and said contact band.

5. A circuit closing means of the class described comprising a distributing dial having a plurality of selected Contact means formed thereon and flush with the inner face thereof, a distributor finger', said distributing dial being formed of a plurality of spaced sections, an indicating finger carried by said distributor finger and working between said spaced sections to indicate the position of said distributor nger with respect to said distributing dial, Contact means carried by said distributor finger for contacting with the inner face of said distributing dial, and means for setting up an electrical circuit between said distributing dial and said distributoi` finger.

6. A circuit closing means of the class described comprising a distributing dial having a plurality of selected contact means formed thereon and ush with the inner face thereof, a distributor finger, said distributing dial being formed of a plurality of spaced sections, an indicating finger carried by said distributor nger and working between said spaced sections to indicate the position of said distributor nger with respect to said distributing dial, contact means carried by said distrbutor nger for contacting with the inner face of said distributing dial, a Contact band anchored at one end, means for yieldably supporting the other end of said contact band, yieldable means for setting up a frictional contact between said distributor nger and said Contact band, and means for completing an electric circuit between said distributing dial and said contact band.

7. A switch for use in connection with radio receiving apparatus comprising a supporting shaft, a distributing dial, a contact band mounted ccncentrically within and spaced from said distributing dial, means for yieldably supporting said contact band, a contact member carried by said shaft and movable over the face of said distributing dial and yieldable frictional contact means carried by said contact member interposed be tween said distributing dial and said contact band for maintaning a constant electrical contact between the contact band and said distributing dial as said contact member is moved between the contact band and the distributing dial in either a clockwise or counter-clockwise direction.

ARTHUR T. CARNEY. 

